Exhaust manifold stud size?

Steve440 · Jun 6th, 2018, 10:40

Got to do this job soon and just trying to get the bits together, so I need to replace the broken stud so can you tell what size I need? Thread size and length.
Then there’s the manifold gasket? Best price I’ve found is £9 for one port! Seems a bit steep?

acshortt5 · Jun 6th, 2018, 19:18

I'd get the stud from volvo (they are pricey but you know it will be correct).
For the exhaust manifold to cylinder head gasket (I'm assuming it is a 2.3 T5/R engine) you can order a V50 T5 one which is one piece (much easier to fit) and about £7 when I bought one a few years ago.

Bob Meadows · Jun 7th, 2018, 18:57

At a guess I would say M8 x? – it is only that but once you have one off the car you can confirm the size (Volvo may confirm on enquiring) The main reason to reply is to say that I wouldn’t buy fasteners from Volvo because of the total lack of value for money factor- studs aren’t anything special so you are free to go for quality H.T. fasteners from others.
I run two Volvos & a 63 year old Riley and purchase these items through various classic car fastener suppliers- many are upgraded to stainless steel – particularly manifold & water studs.
If you have a decent engineering store then the same will be available from them at a fraction of the Volvo price and a higher specification once you know what you want.
Being a tight Lancashire lad I hope it helps!
Bob

DunkinBiskits · Jun 7th, 2018, 19:25

m8 X 1.25

Cyltapen · Jul 5th, 2020, 15:02

Quote:

Originally Posted by DunkinBiskits

m8 X 1.25

Thank you DunkinBiskits, for manifold stud thread size/pitch. Any idea on O/A length, pls?

I have rebuilt a replacement head but it came without any of the 23 studs...!

Look forward to hearing, thank you.

4x4 · Jul 5th, 2020, 15:13

Should be part# 982667

Cyltapen · Jul 6th, 2020, 15:54

Thank you again, 4x4. All sorted

)

FYI, exhaust stud #982667, is an M8 x1.25, 50mm. It takes an M8 x 9.4, flange nut #985868, plus a suitable washer.

There are 10x each, not the 23 as typo, yesterday...

Jun 6th, 2018, 10:40	#1
Steve440 Quicksilver Last Online: Feb 28th, 2024 12:23 Join Date: Oct 2006 Location: Brixham, Devon View Photos By: Steve440	Exhaust manifold stud size? Got to do this job soon and just trying to get the bits together, so I need to replace the broken stud so can you tell what size I need? Thread size and length. Then there’s the manifold gasket? Best price I’ve found is £9 for one port! Seems a bit steep? __________________ 98 V70 R fwd auto, RICA 310, strut brace. 113k owned since 2007. Soon to be recommissioned. 05 Range Rover Sport Tdv6 HSE. Current project. 99 BMW Z3, 30k owned from new.

Jun 6th, 2018, 19:18	#2
acshortt5 Volvo Nutcase Last Online: Jul 14th, 2023 12:57 Join Date: May 2007 Location: N/A View Photos By: acshortt5	I'd get the stud from volvo (they are pricey but you know it will be correct). For the exhaust manifold to cylinder head gasket (I'm assuming it is a 2.3 T5/R engine) you can order a V50 T5 one which is one piece (much easier to fit) and about £7 when I bought one a few years ago. __________________ Andrew 1998 S70 T5 CD AUTO Previously a 1990 240 GLT-R

Jun 7th, 2018, 19:25	#4
DunkinBiskits Master Member Last Online: Jan 1st, 2024 13:30 Join Date: Nov 2016 Location: Merseyside	m8 X 1.25 __________________ https://www.facebook.com/VolvoComposites/ Horsepower is how fast you hit the wall Torque is how far you take the wall with you

Jul 5th, 2020, 15:13	#6
4x4 I roll Last Online: Today 09:16 Join Date: Dec 2017 Location: North of Hadrian's Wall & South of Antonine's Wall View Photos By: 4x4	Should be part# 982667 __________________ MY2010 XC90 SE (M66-manual) Magic Blue (467) Sold MY1997 850 GLT (62,000 miles) Silver Sand (419) MY2005 V70 2.5T (66,000 miles) Willow Green (471) Volvo 850 GLT website

Jul 6th, 2020, 15:54	#7
Cyltapen New Member Last Online: Jun 4th, 2023 08:07 Join Date: Oct 2018 Location: Tunbridge Wells	Thank you again, 4x4. All sorted ) FYI, exhaust stud #982667, is an M8 x1.25, 50mm. It takes an M8 x 9.4, flange nut #985868, plus a suitable washer. There are 10x each, not the 23 as typo, yesterday... Last edited by Cyltapen; Jul 6th, 2020 at 15:56.

Jun 7th, 2018, 18:57	#3
Bob Meadows Premier Member Last Online: Today 10:00 Join Date: Sep 2017 Location: STANDISH LANCASHIRE	At a guess I would say M8 x? – it is only that but once you have one off the car you can confirm the size (Volvo may confirm on enquiring) The main reason to reply is to say that I wouldn’t buy fasteners from Volvo because of the total lack of value for money factor- studs aren’t anything special so you are free to go for quality H.T. fasteners from others. I run two Volvos & a 63 year old Riley and purchase these items through various classic car fastener suppliers- many are upgraded to stainless steel – particularly manifold & water studs. If you have a decent engineering store then the same will be available from them at a fraction of the Volvo price and a higher specification once you know what you want. Being a tight Lancashire lad I hope it helps! Bob

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